This bothers me. Yeah, rent and food is going to be cheap in Kenya, but an iPad will cost the same. There's a good chance it'll be costlier because of import taxes.
Of course, this is a unique case where transcriber had no feedback. In general though, you shouldn't be paying someone based on your opinion of their cost of living. It demonstrates a lack of respect, and shows that you don't treat them as an equal human being.
Maybe it's idealistic nonsense.